JP4999471B2 - Resin molded panel - Google Patents

Description

  According to the present invention, the opening forming seat is integrally projected on the panel body, a skin layer having a high resin density is formed on the surface of the panel body, and has a large number of voids inside, compared to the skin layer. The present invention relates to a resin molded panel in which an expanded layer having a low resin density is formed.

In Patent Document 1, in a process in which a fixed mold and a movable mold are closed, a fiber-filled thermoplastic resin is injected and filled into a cavity, and the fiber-filled thermoplastic resin is solidified in the cavity. By reversing the slide mold built in the cavity volume expansion direction and expanding the thermoplastic resin containing fibers, a skin layer having a high resin density is formed on the entire surface, and has a large number of voids. A resin molded product in which an expanded layer having a resin density lower than that of the skin layer is formed is obtained. And in this resin molded product, it is possible to achieve weight reduction while securing rigidity by increasing the cross-sectional area in the thickness direction by the expansion layer.
Japanese Patent Laid-Open No. 11-179751 (pages 3 and 7, FIG. 1)

  By the way, the resin molded product is inserted and engaged with a fastener such as a fastener for fixing a part such as a door trim such as a resin carrier plate (door module plate) constituting a part of a side door of an automobile. In the case of a resin molded panel having an opening forming seat having an opening on the opening forming seat surface and an opening forming seat having an opening for inserting a work tool for fixing a part on the opening forming seat surface In order to increase the surface accuracy and surface rigidity around the opening from the viewpoint of securing the assembly accuracy, the opening forming seating surface may be formed only on the solid layer having no expansion layer and high resin density. In addition, the surface rigidity said here is the rigidity which concerns on the compressive strength for a seat surface not to be crushed even if a compression load acts on the opening formation seat surface by thickness etc. by fastening.

  However, due to the mold structure of the opening forming seat, a sufficient expansion layer is not formed on the rising wall surface, and the opening forming seating surface is formed of only a solid layer. It's not expensive. Furthermore, since there is an opening in the opening forming seating surface, the rigidity is reduced. Further, since the opening forming seating surface is generally narrow and flat as a whole, it is difficult to align the parts when attaching components or the like.

  The present invention has been made in view of such a point, and the object thereof is to increase the rigidity of the opening forming seat while maintaining the surface rigidity of the opening forming seating surface, and to assemble parts and the like. It is easy to perform positioning.

  In order to achieve the above object, the present invention is characterized in that the structure of the boundary between the opening forming seating surface and the rising wall surface has been devised, and specifically, the following solution has been taken.

That is, a first aspect of the present invention, a panel body, a substantially vertical rising wall surface and projecting from the panel surface to integrally mold opening and closing direction on the panel body, the rising wall of the top portion having an opening integrated over a predetermined range along the boundary at the boundary between the substantially parallel and flat opening formed seat surface without protrusions and openings formed seat surface and the rising wall and the panel surface is integrally formed with the and a formed butt Article or Ranaru opening formed seat projecting in the projecting direction of the rising wall than the opening formed seat surface, forming the vicinity of the mold of the thermoplastic resin injected and filled in the mold cavity When the skin layer is formed on the panel body, by expanding the cavity volume of the portion corresponding to the panel body and the protrusion in the mold opening / closing direction, the thermoplastic resin at the cavity volume expansion portion is expanded, and the panel Body Fine protrusions is less expandable layer of resin density than the skin layer has a large number of voids with a high resin density skin layer is formed on the surface formed therein, whereas, the opening formed seat surface is formed on the solid layer resin density is high Kute surface accuracy and surface rigidity have high without having the expansion layer without enlarging the cavity volume at the time of molding, the rising wall (35) also having high resin density It is formed in a solid layer (56) .

  The invention according to claim 2 is the invention according to claim 1, wherein the resin molded panel is a carrier plate attached between a door inner panel and a door trim of an automobile, and the opening of the opening forming seat surface is The component fixing tool is inserted, and the component is fixed to the opening forming seating surface by a component fixing tool inserted into the opening.

  The invention according to claim 3 is the invention according to claim 1, wherein the resin-molded panel is a carrier plate attached between a door inner panel and a door trim of an automobile, and the opening of the opening forming seat surface is A resin-molded panel for inserting a work tool, wherein a sealing material for closing the opening is attached to the opening forming seating surface.

According to the first aspect of the present invention, the skin layer is formed on the surface of the panel body, and the expansion layer having a large number of voids is formed therein, so that the weight of the resin molded panel can be reduced. Further, the opening forming seating surface is formed in a solid layer having a high resin density without an inflating layer so that the surface accuracy and surface rigidity are high, and a protrusion having an inflating layer with a low resin density inside has an opening forming seating. Since the outer periphery of the opening forming seat is reinforced by integrally forming the boundary between the surface and the rising wall, a sufficient expansion layer is not formed on the rising wall of the opening forming seat and the rising wall is a solid layer. Even if there is an opening on the opening forming seat, the rigidity of the entire opening forming seat can be increased. Further, the protrusion serves as a positioning when assembling the parts and the like, and the parts and the like can be easily assembled to the opening forming seat.

According to the invention of claim 2, since the opening formed seat surface outside around the component by the component fixture is inserted into the opening Ru fixed are reinforced by ribs, the opening forming a component carrier plate It can be assembled easily and stably with high accuracy through the seat.

  According to the invention according to claim 3, since the outer periphery of the opening forming seat surface having the opening into which the work tool is inserted is reinforced by the ridges, even if the opening is formed large, there is little decrease in rigidity, Since workability improves and the sticking surface with high surface accuracy is formed, the sealing material can be attached to the opening forming seating surface easily and hardly peeled off.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 4 is a partial cross-sectional view of the side door 1 of the automobile. The side door 1 includes a metal door body 7 including a door outer panel 3 and a door inner panel 5, and a resin carrier plate (door module plate) serving as a resin molding panel on the door inner panel 5 of the door body 7. 9 is attached via the seal material 11, and the resin door trim 13 is attached to the door inner panel 5 so as to cover the carrier plate 9 from the vehicle interior side, whereby the carrier plate 9 is attached to the door inner panel 5. It is attached between the door trim 13.

  The carrier plate 9 is mixed with an expansion promoting substance such as a chemical foam material that generates gas by a chemical reaction, an inert gas (physical foam material) such as carbon dioxide gas and nitrogen gas, and a fiber such as glass fiber. A plate body 15 is provided as a panel body which is formed of a thermoplastic resin and is the main body. As shown in FIG. 2, a seal groove portion 17 that accommodates the sealing material 11 is formed in the outer peripheral edge portion of the plate body 15 on the outer side surface side of the passenger compartment. In addition, a plurality of circular boss-shaped mounting portions 19 are provided adjacent to the outer periphery of the plate body 15 (inside the seal groove portion 17) so as to protrude integrally around the entire circumference at predetermined intervals. A fastening through hole 19 a is formed in each attachment portion 19 so as to penetrate the plate body 15. Then, the carrier plate 9 is overlaid on the door inner panel 5 so that the through holes 19a of the mounting portions 19 correspond to the plurality of bolt insertion holes 5a formed on the opening peripheral edge of the door inner panel 5, 21 is inserted into each through hole 19a and the bolt insertion hole 5a from the vehicle interior side and screwed into a weld nut 23 welded to the outer side surface of the door inner panel 5 so that the carrier plate 9 is attached to the door inner panel 5. It is attached (see FIG. 4).

  As shown in FIG. 3, two circular boss-shaped mounting seats 25 having through-holes 25a are spaced apart in the longitudinal direction of the vehicle body at the upper and lower edges of the plate body 15 on the outer side surface side of the passenger compartment. Although not shown, a guide rail for raising and lowering the window glass is attached to the mounting seat 25 with bolts and nuts.

  In the middle of FIG. 3 on the side of the vehicle interior side of the plate body 15, a substantially triangular mounting portion 27 for mounting a motor for raising and lowering the window glass is integrally projected, and the mounting portion 27 has a circular shape. The motor mounting hole 27a is formed so as to penetrate the plate main body 15, and five screw insertion through holes 27b are formed around the motor mounting hole 27a so as to penetrate the plate main body 15. ing.

  A pair of attachment portions 29 for attaching pull handles is provided on the left side of the attachment portion 27 in FIG. An attachment hole 29 a is formed so as to penetrate the plate body 15.

  In the middle of the plate body 15 on the side of the vehicle interior at the right end in FIG. 3, a rectangular boss-shaped first opening forming seat 31 and a circular boss-shaped second opening forming seat 33 are arranged in the vertical direction. A second boss-shaped seat 33 having a circular boss shape is integrally projected in the middle of the left end in FIG.

Both the first and second opening forming seats 31 and 33 are integrally projected from the plate main body 15 in the opening and closing direction of a molding die 63, which will be described later , as shown in an enlarged view in FIGS. A rising wall surface 35 that is substantially perpendicular to the plate surface of the plate body 15 , and a flat opening forming seat surface that is substantially parallel to the plate surface of the plate body 15 and has no protrusions at the top of the rising wall surface 35. 37 is integrally formed.

  A circular small diameter opening 39 a is formed on the opening forming seat surface 37 of the first opening forming seat 31 so as to penetrate the plate body 15. The small-diameter opening 39a is for inserting a component fixing tool, and a fastener 41 as a component fixing tool in which the door trim 13 as a component is inserted and engaged with the small-diameter opening 39a is formed on the opening forming seating surface 37. It is fixed by. In FIG. 1, reference numeral 43 denotes a bracket provided on the back surface of the door trim 13, and the fastener 41 is attached to the bracket 43.

  A circular large-diameter opening 39 b is formed on the opening forming seat surface 37 of the second opening forming seat 33 so as to penetrate the plate body 15. The large-diameter opening 39b is for inserting a work tool. After the work glass 45 is inserted into the large-diameter opening 39b and the window glass assembling work is finished on the opening-forming seating surface 37. The sealing material 47 that closes the large-diameter opening 39b is attached. Further, a semicircular protrusion 37a for draining water is integrally provided so as to surround the large-diameter opening 39b from above on the outer periphery of the large-diameter opening 39b on the outer side surface side of the plate body 15. (See FIG. 3).

In the first and second opening forming seats 31 and 33, a protrusion 49 is integrally formed on the boundary between the opening forming seating surface 37 and the rising wall surface 35 over a predetermined range along the boundary. The protrusion 49 rises from the opening forming seat surface 37 and protrudes in the protruding direction of the wall surface 35. Specifically, the protrusion 49 is formed in a U shape on the first opening forming seat 31 side, and on the second opening forming seat 33 side on the right end side in FIG. 3, the first opening forming seat 31 side. It is formed in a substantially semicircular shape so as to be continuous with the protrusion 49, and is formed in a ring shape on the second opening forming seat 33 side on the left end side in FIG.

The plate body 15 has a skin layer 51 in the vicinity of the molding surfaces 55a and 57a of the molding die 63 (fixed die 55, movable die 57) of the thermoplastic resin R as described above injected and filled into a cavity 65 of the molding die 63 described later. expansion but at the time it was generated, by Rukoto to expand the cavity volume of the portion corresponding to the plate body 15 in the mold 63 opening and closing direction (the movable mold 57 backward), the thermoplastic resin R of the cavity volume expanding portion As shown in FIG. 1, a skin layer 51 having no voids and a high resin density is formed on the surface, and has a large number of voids (not shown) and a resin density lower than that of the skin layer 51. An expansion layer 53 is formed inside. In FIG. 4, the plate body 15 is shown as a single layer for convenience of drawing.

In contrast, the openings formed seat surface 37 of the first and second openings forming seats 31 and 33, the expansion without enlarging the cavity volume at the time of molding into the mold 63 opening and closing direction (the movable mold 57 backward) without having a layer 53, also rising wall 35 without having little cavity volume during molding the expandable layer 53 without being enlarged only slightly mold 63 opening and closing direction (the movable mold 57 backward), both of the resin density It is formed at a solid layer 5 6. Further, the ridges 49, the cavity volume of the portion corresponding to the protrusion 49 Ru is enlarged to the plate body 15 the same mold 63 opening and closing direction between the cavity volume increasing portion corresponding to the (movable mold 57 backward) during molding As a result, the thermoplastic resin R at the cavity volume expansion portion is expanded, and as shown in FIG. 1, a skin layer 51 having no voids and high resin density is formed on the surface, and a large number of voids (not shown). ) And an expansion layer 53 having a lower resin density than the skin layer 51 is formed inside.

  Next, the procedure for forming the carrier plate 9 will be described.

  5 and 7, when forming, a hydraulic cylinder (not shown) extends in the fixed mold 55, the movable mold 57 disposed opposite to the fixed mold 55, and the through hole 59 of the fixed mold 55. A molding die 63 including a slide die 61 accommodated and arranged in a state of being biased toward the movable die 57 by the operation is prepared. The molding surfaces 55 a and 61 a of the fixed die 55 and the slide die 61 are formed corresponding to the shape of the plate body 15 on the side of the vehicle interior. The molding surface 57a of the movable mold 57 is formed corresponding to the shape of the plate body 15 on the outer side surface side of the passenger compartment.

  5 and 6, 55b is a rectangular recess formed on the molding surface 55a of the fixed die 55 corresponding to the outer surface shape of the first opening forming seat 31, and 61b is the molding surface 61a of the slide die 61. And a circular recess formed corresponding to the small-diameter opening 39a of the first opening forming seat 31. 57b is a rectangular convex portion formed on the molding surface 57a of the movable die 57 corresponding to the inner surface shape of the first opening forming seat 31, and 57c is a first opening at the top of the rectangular convex portion 57b of the movable die 57. It is a circular convex part formed corresponding to the small diameter opening 39 a of the part forming seat 31, and the circular convex part 57 c is fitted in the circular concave part 61 b of the slide mold 61. Further, the molding surface 61a of the slide mold 61 is set to have a smaller area than the top of the circular convex portion 57b of the movable mold 57 and is located inward of the top of the circular convex portion 57b.

In FIG. 7, 55 c is a circular recess formed on the molding surface 55 a of the fixed die 55 corresponding to the outer surface shape of the second opening forming seat 33, and 61 c is the second on the molding surface 61 a of the slide die 61. It is a circular convex portion formed corresponding to the large-diameter opening 39 b of the opening forming seat 33. 57d is a circular convex portion formed on the molding surface 57a of the movable die 57 corresponding to the inner surface shape of the second opening forming seat 33, and 57e is a second opening at the top of the circular convex portion 57d of the movable die 57. It is a circular recess formed corresponding to the large-diameter opening 39b of the part forming seat 33, and the circular protrusion 61c of the slide mold 61 is fitted in the circular recess 57e. 57f is a semicircular groove portion formed on the molding surface 57a of the movable die 57 corresponding to the inner and outer surface shape of the semicircular protruding piece 37a for drainage of the second opening forming seat 33. 55d is a recess formed on the molding surface 55a of the fixed die 55 corresponding to the back surface shape of the seal groove portion 17 of the second opening forming seat 33, and 57g is the molding surface 57a of the movable die 57 on the plate main body 15 . It is a convex portion formed corresponding to the groove shape of the seal groove portion 17. Further, the molding surface 61a of the slide die 61 is set to have an area smaller than the top of the circular convex portion 57d of the movable die 57 and is located inside the top of the circular convex portion 57d.

  First, as shown in FIGS. 5 and 7, the mold 63 is closed. In this closed state, a cavity 65 for forming the carrier plate 9 is formed between the forming surface 55a of the fixed die 55 and the forming surface 57a of the movable die 57. The slide mold 61 is biased toward the movable mold 57 by the extension operation of a hydraulic cylinder (not shown). In FIG. 5, the circular convex portion 57c of the movable mold 57 is formed in the circular concave section 61b at the tip of the slide mold 61. In FIG. 7, the circular convex portion 61 c of the slide mold 61 is fitted and abutted with the circular concave portion 57 e of the movable mold 57, and the advance operation of the slide mold 61 is restricted.

  Next, a thermoplastic resin R (for example, polypropylene resin) mixed with the above-described expansion promoting substance, glass fiber, and the like is injected and filled into the cavity 65 of the mold 63 from an injection machine (not shown). 5 and 7 show this injection filling state.

  Thereafter, the skin layer 51 is generated in the vicinity of the molding surfaces 55a and 57a of the molding die 63 due to the solidification of the thermoplastic resin R injected and filled in the cavity 65 of the molding die 63. It has not solidified.

  Then, in the process in which the thermoplastic resin R injected and filled into the cavity 65 of the mold 63 is solidified, the movable mold 57 is retracted in the cavity volume expansion direction X1 (mold opening direction) as shown in FIGS. Let That is, the movable mold 57 is slightly separated from the fixed mold 55, and the cavity volume is increased by, for example, twice or more. Along with this, the slide die 61 follows the backward movement of the movable die 57 in the direction of the arrow X2, and advances into the cavity 65. For this reason, the cavity volume corresponding to the slide die does not increase. At this stage, the thermoplastic resin R forms a surface layer as a skin layer 51 without voids because the portions of the molding die 63 that are in contact with the molding surfaces 55a and 57a are cooled early due to the influence of the mold temperature. To do. On the other hand, the inner part of the thermoplastic resin R is hardly affected by the mold temperature and is in a gel state with high viscosity. Therefore, due to the expansion of the cavity volume, the thermoplastic resin R that has been compressed by the fixed mold 55 and the movable mold 57 is pulled by the molding surface 57a of the movable mold 57 and is generated by a chemical reaction in the thermoplastic resin R. Expansion due to gas or inert gas. At this time, the fibers in the thermoplastic resin R are also elastically restored with the compression reduced, and the thermoplastic resin R expands by this elastic restoring force (spring back phenomenon).

As a result, a skin layer 51 having no voids and a high resin density is formed on the surface, and an expanded layer 53 having a large number of voids (not shown) inside and having a resin density lower than that of the skin layer 51 is formed. The plate body 15 is expanded. In addition, first and second opening forming seats 31 and 33 are formed at the slide mold corresponding portions. These first and second opening forming seats 31 and 33 are provided integrally with the plate main body 15 so as to project from the rising wall surface 35 substantially perpendicular to the plate surface of the plate main body 15 and the openings (small diameter opening 39a, large diameter opening). An opening-forming seating surface 37 that is formed integrally with the top of the rising wall 35 and is substantially parallel to the plate surface of the plate body 15 and has no protrusions ; It comprises a ridge 49 which is integrally formed over a predetermined range along the boundary with the rising wall surface 35 and protrudes in the protruding direction of the rising wall surface 35 from the opening forming seat surface 37. The opening-forming seating surface 37 has a high resin density without increasing the cavity volume at the time of molding in the mold 63 opening / closing direction (moving mold 57 backward direction), and without the expansion layer 53, and has high surface accuracy and surface. rigidity is formed at a solid layer 5 6. Further, since the mold wall formed by the fixed mold 55 and the movable mold 57 extends in the mold opening direction, the rising wall surface 35 has a cavity volume forming mold even if the movable mold 57 is retracted in the cavity volume expansion direction X1. 63 expansion of the opening and closing direction (movable die 57 backward direction) just a little expansion layer 53 is not formed, are formed on the solid layer 5 6. On the other hand, the protrusion 49 expands the cavity volume of the portion corresponding to the protrusion 49 during molding in the same mold 63 opening / closing direction (moving die 57 backward direction) as the cavity volume expansion portion corresponding to the plate body 15. the Rukoto is, the cavity volume is expanded to the thermoplastic resin R expanding portion, with the skin layer 51 having high resin density no gap is formed on the surface, the having numerous voids (not shown) An expansion layer 53 having a resin density lower than that of the skin layer 51 is formed inside. Thus, the expansion layer 53 is formed inside the protrusion 49 because the molding surface 61a of the slide mold 61 has a smaller area than the tops of the rectangular protrusions 57b and the circular protrusions 57d of the movable mold 57. This is because the cavity volume around the outer periphery of the slide die 61 is enlarged and the resin pressure is released when the movable die 57 is retracted (when the slide die 61 advances). Although not shown in the drawings, the solid layers having a high resin density can be used in places where the mounting portions 19, 27, 29, the mounting seat 25, and the like require assembly accuracy without having the expansion layer 53 without expanding the cavity volume during molding. It is formed by 5 6.

In this way, the plate main body 15 excluding the places where the first and second opening forming seats 31, 33, the mounting portions 19, 27, 29, the mounting seat 25, etc. require assembly accuracy, has a skin layer 51 on the surface. Is formed, and the expansion layer 53 having a low resin density having a large number of voids therein is formed to increase the cross-sectional area in the thickness direction. Therefore, the rigidity of the entire plate is high, and the plate body 15 has no expansion layer 53. resin dense solid layer 5 consists of six only and in comparison with the case of the same rigidity and the plate body 15 of the present embodiment, it is possible to reduce the weight.

Further, in the first and second openings formed seat 31 and 33, mounting portion 19,27,29 and the mounting seat 25 solid layer 5 6 high rigidity sections requiring high free resin density intumescent layer 53 such as Since it is formed, the cavity surface of the mold is well transferred, the surface accuracy is high, and the enhancement of the surface rigidity, particularly the enhancement of the compressive strength, can be ensured.

Further, in the first and second openings formed seat 31 and 33, a low expansion layer 53 of resin density ridges 49 having therein the boundary in the boundary between the wall surface 35 rising and opening formed seat surface 37 Since the outer periphery of the opening forming seating surface 37 is reinforced by being integrally formed over a predetermined range , the first opening even if the opening forming seating surface 37 has a small diameter opening 39a or a large diameter opening 39b. And the rigidity of the 2nd opening part formation seats 31 and 33 whole can be improved.

  Therefore, in the first opening forming seat 31, the door trim 13 can be stably and accurately assembled to the carrier plate 9 via the opening forming seating surface 37. Further, when the fastener 41 for attaching the door trim 13 is inserted into the small-diameter opening 39a, the protrusion 49 functions to position the bracket 43 to which the fastener 41 is attached with respect to the opening forming seat surface 37, and the door trim 13 is The carrier plate 9 can be easily assembled.

On the other hand, in the second opening forming seat 33, the large diameter opening 39 b is larger than the small diameter opening 39 a of the first opening forming seat 31, but the outer periphery of the opening forming seat surface 37 is reinforced by the ridge 49. Therefore, there is little reduction in rigidity, and the window glass can be easily assembled by inserting the work tool 45 into the large-diameter opening 39b, thereby improving workability. Further, after the window glass assembling work is completed, the protrusion 49 functions to position the sealing material 47 attached to close the large-diameter opening 39b with respect to the opening-forming seating surface 37. Since the high sticking surface is formed, the sealing material 47 can be attached to the opening forming seating surface 37 easily and hardly peeled off.

In the above embodiment, fibers such as glass fibers are mixed in the thermoplastic resin R, but the fibers do not necessarily have to be mixed. Further, the expansion of the thermoplastic resin R may be performed only by an elastic restoring force by a fiber such as glass fiber .

  Further, in the above embodiment, the case where the resin molded panel is the carrier plate 9 of the side door of the automobile is shown. However, the above embodiment is applied to other automobile panels such as an instrument panel, a door trim, a trunk board, etc. It can be applied to other household appliances, residential panels, and the like.

  According to the present invention, the opening forming seat is integrally projected on the panel body, a skin layer having a high resin density is formed on the surface of the panel body, and has a large number of voids inside, compared to the skin layer. This is useful for a resin molded panel in which an expanded layer having a low resin density is formed.

It is sectional drawing in the II line | wire of FIG. It is sectional drawing in the II-II line | wire of FIG. It is the front view which looked at the carrier plate from the vehicle interior side. It is sectional drawing equivalent to the IV-IV line | wire of FIG. 3 of the side door of the motor vehicle to which the carrier plate was applied. FIG. 2 is a molding process diagram corresponding to FIG. 1 showing a state in which a thermoplastic resin is injected and filled into a cavity of a molding die. FIG. 6 is a molding process diagram showing a state in which the movable mold of the molding mold in FIG. 5 is slightly retracted in the direction in which the cavity volume increases. FIG. 3 is a molding process diagram corresponding to FIG. 2 showing a state in which a thermoplastic resin is injected and filled into a cavity of a molding die. FIG. 8 is a molding process diagram showing a state where the movable mold of the molding mold in FIG. 7 is slightly retracted in the direction in which the cavity volume is enlarged.

5 Door inner panel 9 Carrier plate (resin molded panel)
11 Sealing material 13 Door trim (parts)
15 Plate body (panel body)
31 First opening forming seat 33 Second opening forming seat 35 Rising wall surface 37 Opening forming seat surface 39a Small diameter opening 39b Large diameter opening 41 Fastener (component fixture)
45 Work tools
47 sealing material 49 ridge 51 skin layer 53 expansion layer
56 Solid layers 55a, 57a Molding surface 63 Mold 65 Cavity R Thermoplastic resin

Claims (3)

The panel body (15),
The panel body (15) has a rising wall surface (35) projecting integrally in the opening and closing direction of the molding die (63) and substantially perpendicular to the panel surface, and has an opening (39a, 39b) and the top portion of the rising wall surface (35) . substantially parallel and there is no protrusion flat opening formed seat surface integral with the formed panel surface (37) and the boundary at the boundary of the opening formed seating surface (37) and the rising wall (35) collision Article (49) or Ranaru opening formed seat which protrudes in a protruding direction of the wall surface (35) rising from the opening formed seating surface are formed integrally (37) over a predetermined range along the (31, 33) And
When the skin layer (51) is generated near the molding surface (55a, 57a) of the molding die (63) of the thermoplastic resin (R) injected and filled into the cavity (65) of the molding die (63), the above-mentioned By expanding the cavity volume of the part corresponding to the panel body (15) and the protrusion (49) in the mold (63) opening and closing direction, the thermoplastic resin (R) in the cavity volume enlarged part is expanded, The panel body (15) and the ridges (49) have a skin layer (51) with a high resin density formed on the surface and a large number of voids, and an expanded layer with a lower resin density than the skin layer (51). (53) formed therein, whereas, the opening formed seat surface (37), resin density high Kute surface accuracy and without having the expansion layer without enlarging the cavity volume at the time of molding (53) formed a solid layer surface rigidity is not high (56), the rising wall (35) also, especially that it is formed at a solid layer of resin density (56) And a resin molded panel. The resin molded panel according to claim 1,
The resin molded panel is a carrier plate (9) attached between the door inner panel (5) and the door trim (13) of the automobile,
The opening (39a ) of the opening forming seat (37) is for inserting a component fixing tool (41) ,
A resin molded panel characterized in that the part (13) is fixed to the opening forming seating surface (37) by a part fixing tool (41) inserted into the opening (39a). . The resin molded panel according to claim 1,
The resin molded panel is a carrier plate (9) attached between the door inner panel (5) and the door trim (13) of the automobile,
The opening (39b ) of the opening forming seat (37) is for inserting the work tool (45) ,
A resin-molded panel, wherein a sealing material (47) for closing the opening (39b ) is attached to the opening forming seating surface (37) .

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